imx8mp DSI LCD color adjustment

[malik_cisse]

Hi,

The imx8mp DSI LCD image appears to be slightly Red and I would like to do some color adjustments to correct HUE.

Any idea how to do that in the driver?

The only promising info I found so far in the RM is pointing to LCDIF (the RM shows that color conversion ALU can be configured via CPU registers) but I am not sure how to set this.
Thank you

[malik_cisse]

Hi Joseph,
Interesting pointer as the questioner has exact same issue.
However the feedback proposal there does not really help unfortunately. 

[JosephAtNXP]

Yes, I think that we can save the part that states that there is a color matrix and we can modify it by writing to the registers you pointed out CSC0_COEF [0..5].

But the register adjustment is up to you, due to you would need to perform the operation to get the value that should be assigned to the Red Value.

Regards

[JosephAtNXP]

Hi,

This is a helpful resource that you ma want to check

IMX8MP LVDS LCD contrast and colour saturation con... - NXP Community

Thank you!